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FZUS52 KCHS 161557

CWFCHS



Coastal Waters Forecast

National Weather Service Charleston SC

1157 AM EDT Fri May 16 2025



South Santee River SC to Savannah GA out 20 NM and Savannah GA to

Altamaha Sound GA out 60 NM, including Charleston Harbor and

Grays Reef National Marine Sanctuary



AMZ300-170445-

1157 AM EDT Fri May 16 2025



.Synopsis for the coastal waters of south coastal South Carolina

and north coastal Georgia...

Broad high pressure will remain across the area through the

remainder of the week. A weak cold front may push over the region

early next week, remaining generally stationary through Tuesday.

A stronger cold front is timed to sweep across the region

Wednesday into Wednesday night. 



$$



AMZ330-170445-

Charleston Harbor-

1157 AM EDT Fri May 16 2025



.THIS AFTERNOON...W winds 10 to 15 kt, becoming SW 15 to 20 kt.

Waves building to 1 to 2 ft.  

.TONIGHT...SW winds 10 to 15 kt, diminishing to 5 to 10 kt after

midnight. 

.SAT...SW winds 10 to 15 kt. 

.SAT NIGHT...SW winds 10 to 15 kt with gusts to 20 kt, becoming W

5 to 10 kt after midnight. 

.SUN...W winds 5 to 10 kt. 

.SUN NIGHT...SW winds 5 to 10 kt. 

.MON...SW winds 5 kt. 

.MON NIGHT...SW winds 5 kt. 

.TUE...SW winds 5 to 10 kt. 

.TUE NIGHT...SW winds 10 kt.  



Unless otherwise noted, waves 1 foot or less. 



Charleston Harbor water temperature 77 degrees. 



$$



AMZ350-170445-

Waters from South Santee River to Edisto Beach SC out 20 NM-

1157 AM EDT Fri May 16 2025



.THIS AFTERNOON...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave

Detail: S 3 ft at 6 seconds. 

.TONIGHT...SW winds 10 to 15 kt. Seas 3 ft. Wave Detail: SW 3 ft

at 5 seconds and SE 2 ft at 8 seconds. 

.SAT...SW winds 10 to 15 kt, increasing to 15 to 20 kt with gusts

to 25 kt in the afternoon. Seas 2 to 3 ft, building to 3 to 4 ft

in the afternoon. Wave Detail: SW 3 ft at 4 seconds and SE 2 ft

at 8 seconds, becoming SW 4 ft at 5 seconds and SE 2 ft at

8 seconds. 

.SAT NIGHT...SW winds 15 to 20 kt with gusts to 25 kt, becoming W

10 to 15 kt after midnight. Seas 3 to 4 ft, subsiding to 2 to

3 ft after midnight. Wave Detail: S 4 ft at 5 seconds and SE 2 ft

at 8 seconds, becoming SW 3 ft at 5 seconds and SE 2 ft at

8 seconds. 

.SUN...W winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at

5 seconds and SE 2 ft at 8 seconds. 

.SUN NIGHT...SW winds 5 to 10 kt. Seas 2 ft. Wave Detail: SW 2 ft

at 5 seconds and SE 2 ft at 8 seconds. 

.MON...SW winds 5 to 10 kt. Seas 2 ft. 

.MON NIGHT...SW winds 5 to 10 kt. Seas 2 ft. 

.TUE...SW winds 10 to 15 kt. Seas 2 ft. 

.TUE NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft.  



$$



AMZ352-170445-

Waters from Edisto Beach SC to Savannah GA out 20 NM-

1157 AM EDT Fri May 16 2025



.THIS AFTERNOON...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave

Detail: S 2 ft at 6 seconds. 

.TONIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SW

2 ft at 4 seconds and SE 2 ft at 8 seconds. 

.SAT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft

at 4 seconds and SE 2 ft at 8 seconds. 

.SAT NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S

3 ft at 5 seconds and SE 2 ft at 8 seconds. 

.SUN...W winds 5 to 10 kt, becoming SW in the afternoon. Seas

2 to 3 ft. Wave Detail: S 2 ft at 5 seconds and SE 2 ft at

8 seconds. A slight chance of showers and tstms in the afternoon.

.SUN NIGHT...SW winds 5 to 10 kt. Seas 2 ft. Wave Detail: SE 2 ft

at 8 seconds and S 1 foot at 5 seconds. 

.MON...SW winds 5 kt. Seas 2 ft. 

.MON NIGHT...SW winds 5 to 10 kt. Seas 2 ft. 

.TUE...SW winds 5 to 10 kt. Seas 2 ft. 

.TUE NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft.  



Winds and seas higher in and near tstms.



$$



AMZ354-170445-

Waters from Savannah GA to Altamaha Sound GA out 20 NM, including

Grays Reef National Marine Sanctuary-

1157 AM EDT Fri May 16 2025



.THIS AFTERNOON...SW winds 10 to 15 kt. Seas 2 ft. Wave Detail: 

SW 2 ft at 4 seconds and SE 2 ft at 8 seconds. 

.TONIGHT...SW winds 10 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at

4 seconds and SE 2 ft at 8 seconds. 

.SAT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft

at 4 seconds and SE 2 ft at 8 seconds. 

.SAT NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S

2 ft at 4 seconds and SE 2 ft at 8 seconds. 

.SUN...W winds 5 to 10 kt, becoming S in the afternoon. Seas

2 ft. Wave Detail: S 2 ft at 5 seconds and SE 2 ft at 8 seconds.

A slight chance of showers and tstms in the afternoon. 

.SUN NIGHT...SW winds 5 to 10 kt. Seas 2 ft. Wave Detail: SE 2 ft

at 8 seconds and S 1 foot at 4 seconds. A slight chance of

showers and tstms in the evening. 

.MON...SW winds 5 to 10 kt. Seas 2 ft. 

.MON NIGHT...S winds 10 kt. Seas 2 ft. 

.TUE...SW winds 10 kt. Seas 2 ft. 

.TUE NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft.  



Winds and seas higher in and near tstms.



$$



AMZ374-170445-

Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-

1157 AM EDT Fri May 16 2025



.THIS AFTERNOON...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave 

Detail: SW 2 ft at 4 seconds and SE 2 ft at 8 seconds. 

.TONIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SW

2 ft at 4 seconds and SE 2 ft at 8 seconds. 

.SAT...SW winds 10 to 15 kt. Seas 3 ft. Wave Detail: SW 3 ft at

4 seconds and SE 2 ft at 8 seconds. 

.SAT NIGHT...SW winds 10 to 15 kt. Seas 3 ft. Wave Detail: SW

3 ft at 4 seconds and SE 2 ft at 8 seconds. 

.SUN...W winds 5 to 10 kt, becoming SW in the afternoon. Seas

2 to 3 ft. Wave Detail: S 2 ft at 5 seconds and SE 2 ft at

8 seconds. 

.SUN NIGHT...SW winds 5 to 10 kt. Seas 2 ft. Wave Detail: S 2 ft

at 3 seconds and SE 2 ft at 8 seconds. 

.MON...SW winds 5 to 10 kt. Seas 2 ft. 

.MON NIGHT...S winds 5 to 10 kt. Seas 2 ft. 

.TUE...SW winds 5 to 10 kt. Seas 2 ft. 

.TUE NIGHT...S winds 10 to 15 kt. Seas 3 to 4 ft.  



$$